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  <title>从服务端删除一个元素</title>

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</div><hr /><div id="memcache.delete" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Memcache::delete</h1>
  <p class="verinfo">(PECL memcache &gt;= 0.2.0)</p><p class="refpurpose"><span class="refname">Memcache::delete</span> &mdash; <span class="dc-title">从服务端删除一个元素</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-memcache.delete-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>Memcache::delete</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$timeout</code><span class="initializer"> = 0</span></span>
  ] )</div>


  <p class="para rdfs-comment">
   <span class="function"><strong>Memcache::delete()</strong></span>函数通过<em><code class="parameter">key</code></em>删除一个元素。
   如果参数<em><code class="parameter">timeout</code></em>指定，该元素会在<em><code class="parameter">timeout</code></em>秒后失效。
   同样也可以使用<span class="function"><strong>memcache_delete()</strong></span>函数完成同样功能。
  </p>

 </div>


 <div class="refsect1 parameters" id="refsect1-memcache.delete-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">key</code></em></dt>

     <dd>

      <p class="para">
      要删除的元素的key。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">timeout</code></em></dt>

     <dd>

      <p class="para">
      删除该元素的执行时间。如果值为0,则该元素立即删除，如果值为30,元素会在30秒内被删除。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>



 <div class="refsect1 changelog" id="refsect1-memcache.delete-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>Unknown</td>
      <td>
       
       It&#039;s not recommended to use the <em><code class="parameter">timeout</code></em> parameter. The
       behavior differs between memcached versions, but setting to <em>0</em>
       is safe. Other values for this deprecated feature may cause the memcache delete
       to fail.
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-memcache.delete-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-memcache.delete-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4320">
    <p><strong>Example #1 <span class="function"><strong>Memcache::delete()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">/*&nbsp;procedural&nbsp;API&nbsp;*/<br /></span><span style="color: #0000BB">$memcache_obj&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">memcache_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;10秒后key_to_delete对应的值会被从服务端删除&nbsp;*/<br /></span><span style="color: #0000BB">memcache_delete</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'key_to_delete'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">10</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;OO&nbsp;API&nbsp;*/<br /></span><span style="color: #0000BB">$memcache_obj&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">delete</span><span style="color: #007700">(</span><span style="color: #DD0000">'key_to_delete'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">10</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-memcache.delete-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="memcache.set.html" class="function" rel="rdfs-seeAlso">Memcache::set()</a> - Store data at the server</span></li>
    <li class="member"><span class="function"><a href="memcache.replace.html" class="function" rel="rdfs-seeAlso">Memcache::replace()</a> - 替换已经存在的元素的值</span></li>
   </ul>
  </p>
 </div>


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